CN202751866U - Differential pressure type water filter capable of achieving automatic back flushing - Google Patents
Differential pressure type water filter capable of achieving automatic back flushing Download PDFInfo
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- CN202751866U CN202751866U CN 201220407699 CN201220407699U CN202751866U CN 202751866 U CN202751866 U CN 202751866U CN 201220407699 CN201220407699 CN 201220407699 CN 201220407699 U CN201220407699 U CN 201220407699U CN 202751866 U CN202751866 U CN 202751866U
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- differential pressure
- pressure type
- diaphragm valve
- filter core
- valve
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Abstract
The utility model relates to a differential pressure type water filter capable of achieving automatic back flushing. The differential pressure type water filter capable of achieving automatic back flushing comprises a main body provided with more than two sets of filtering units. The filtering units comprises a filtering core, a water inlet arranged at the top end of the filtering core, a differential pressure type membrane valve arranged on the position of the water inlet of the valve core, and a drainage pipe arranged at the lower end of the valve core. One end of the drainage pipe stretches into the lower end of the valve core, and the other end of the drainage pipe extends outside the main body. A drainage hole is formed at the one end, stretching into the valve core, of the drainage pipe, and a drainage valve is arranged at the one end, extends outside the main body, of the drainage pipe. The differential pressure type membrane valve is provided with a flexible assembly. When an inner cavity of the flexible assembly compresses, the water inlet of the filtering core is closed by the differential pressure type membrane valve; and when the inner cavity of the flexible assembly resets, the water inlet of the filtering core is opened by the differential membrane valve. An inner cavity of the drainage pipe is communicated with the inner cavity of the flexible assembly. The differential pressure type water filter capable of achieving automatic back flushing has the advantages that mode of filtering drainage through the single filtering unit and mode of the automatic back flushing through the filtering core can be automatically switched, nonstop and on-line operation of back flushing can be achieved, operation is simple, and working efficiency is high.
Description
Technical field
The utility model relates to the filter technical field, relates in particular to a kind of differential pressure type water filtering device of realizing automatic backwash.
Background technology
Sewage is filtered normal need use water filtering device; the cardinal principle of water filtering device is to utilize filter medium to hold back solid particle in liquid water and the solid particle mixture; solid particle is trapped within the filter medium surface and forms filter residue, thereby obtains clean liquid water.
Along with constantly carrying out of filtering, the filter cake layer that accumulate on the filter medium surface is thickeied gradually, and liquid increases by the resistance of filter cake layer thereupon, and the rate of filtration reduces, thereby can affect filter effect.Therefore, need filter medium is cleaned.
Traditional water filtering device does not generally all have special self-cleaning function, thus cumbersome when cleaning, want stripping device sometimes, come filter medium is cleaned, operation easier is large and cleaning efficiency is low, and washing and cleaning operation also can cause shutdown, can impact normal filtration operation; Sometimes also may abandon cleaning and directly change filter medium, cause larger waste.
This shows how water filtering device of the prior art is improved, make it to have self-cleaning function, simplify cleaning process, improve cleaning efficiency, is present this area technical issues that need to address.
The utility model content
In view of this, the purpose of this utility model is to provide a kind of differential pressure type water filtering device of realizing automatic backwash, can filter sewage, can realize easily again the backwash to filter core.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of differential pressure type water filtering device of realizing automatic backwash comprises main body, is provided with two groups of above filter elements in the main body, by utilizing the pressure differential of body interior, realizes the automatic switchover of sewage water filtration pattern and filter-core back-flushing mold cleaning formula; Described filter element comprises filter core, be arranged on the filter core water inlet on filter core top, be arranged on the filter core water inlet the differential pressure type diaphragm valve, be arranged on the blow-off pipe of filter core lower end, one end of described blow-off pipe stretches into the filter core lower end, the other end extend out to outside the main body, an end that stretches into filter core is provided with mudhole, extend out to the outer end of main body and is provided with blowoff valve; Described differential pressure type diaphragm valve is provided with elastic parts, when the inner chamber compression of described elastic parts, described differential pressure type diaphragm valve with the filter core water inlet close, when the inner chamber of described elastic parts resets, described differential pressure type diaphragm valve is opened the filter core water inlet, the inner chamber conducting of the inner chamber of described blow-off pipe and described elastic parts.
Preferably, utilize compression that differential pressure in the main body realizes the elastic parts inner chamber and reset.
Preferably, described differential pressure type diaphragm valve also comprises valve body fixture, spool, the valve seat that cooperates with spool, and described elastic parts is arranged on the valve body fixture; Described elastic parts comprises diaphragm valve capsule and elastic reset spare, and described diaphragm valve capsule lower end and valve body fixture are fixed, and described elastic reset spare is used for making the diaphragm valve capsule after the compression to reset; Be provided with a connection piece in the described diaphragm valve capsule, described connector one end is connected with the inside of diaphragm valve capsule, the other end is connected with spool, when the inner chamber compression of diaphragm valve capsule, connector band movable valve plug and valve seat are closed and the filter core water inlet is sealed, when the inner chamber of diaphragm valve capsule resetted, connector band movable valve plug separated with valve seat and the filter core water inlet is opened.
Preferably, described connector is provided with the cavity that connects two ends, described connector is provided with a through hole that its cavity is communicated with diaphragm valve capsule cavity, described valve core housing is located at the bottom of connector and fixing with it, and the lower end of described connector is connected by the end that a signal pipe and blow-off pipe stretch into filter core.
Preferably, described elastic reset spare be arranged in the inner chamber of diaphragm valve capsule and two ends respectively with upper end and the lower end butt of diaphragm valve capsule inner chamber; Perhaps, described elastic reset spare is connected between main body top and the diaphragm valve capsule top.
Preferably, the described blow-off pipe end that stretches into filter core is provided with a plurality of mudholes.
Preferably, described elastic reset spare is spring.
Preferably, the gusset of described diaphragm valve capsule is provided with a plurality of retractable foldings.
Preferably, described diaphragm valve capsule comprises the bottom that sidewall that top that hard material is made and elastomeric material are made and hard material are made, and the bottom is provided with the through hole that passes for connector.
Preferably, described through hole is arranged on the top of connector.
Compared with prior art; the differential pressure type water filtering device of realizing automatic backwash of the present utility model; it comprises main body; the filter element of a plurality of independent controls is set in the main body; each filter element arranges filter core; the differential pressure type diaphragm valve; blow-off pipe with the cavity conducting of differential pressure type diaphragm valve; by opening or closed blow-off pipe stretches out the blowoff valve of the outer end of main body; the pressure differential of recycling body interior; just can realize the automatic switchover of single filter element sewage water filtration pattern and filter-core back-flushing mold cleaning formula; thereby realize not shutting down the online backwashing operation; eliminated the interference of backsurging operation to normal filtration operation, easy and simple to handle; cleaning efficiency is high.
Description of drawings
Fig. 1 is the structural representation of realizing the differential pressure type water filtering device embodiment of automatic backwash of the present utility model;
Fig. 2 is the structural representation of differential pressure type diaphragm valve among Fig. 1;
Fig. 3 is the internal pressure distribution schematic diagram of differential pressure type water filtering device when realizing backwashing function among Fig. 1;
Fig. 4 is the structural representation when the differential pressure type water filtering device is in the automatic backwash state among Fig. 1;
Fig. 5 is the schematic diagram when the differential pressure type diaphragm valve is in the automatic backwash state among Fig. 4;
More than among each figure, arrow represents water (flow) direction.
The specific embodiment
Basic conception of the present utility model is, a kind of differential pressure type water filtering device of realizing automatic back-flushing function is provided, it comprises main body, be provided with a plurality of filter elements in the main body, each filter element comprises filter core, in the filter core water inlet differential pressure type diaphragm valve is set, simultaneously in the filter core lower end blow-off pipe is set, blow-off pipe is connected with the inner chamber compressible, that reset of differential pressure type diaphragm valve and conducting, by the ingenious reasonable setting to structure, so that water filtering device can namely be realized by shirtsleeve operation the backwash of filter core, improve cleaning efficiency.
In order to make those skilled in the art understand better the technical solution of the utility model, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Such as Fig. 1～shown in Figure 5, the differential pressure type water filtering device of the automatic backwash realized of present embodiment, comprise main body 1, be arranged on a plurality of filter elements in the main body 1, each filter element comprises filter core 2, is arranged on the differential pressure type diaphragm valve 3 of filter core 2 upper ends, is arranged on the blow-off pipe 4 of filter core 2 lower ends.Main body 1 is provided with into Shui Zongkou 11 and the total mouth 12. of water outlet
Differential pressure type diaphragm valve 3 is used for the water inlet of filter element is opened or closed, referring to Fig. 2, differential pressure type diaphragm valve 3 comprises diaphragm valve capsule 31, is arranged on the spring 32 in the diaphragm valve capsule, the hollow connecting shaft 33 that one end is connected with diaphragm valve capsule top inner wall, spring 32 is set in the end periphery that hollow connecting shaft 33 stretches into diaphragm valve capsule 31, the top inner wall butt of spring 32 1 ends and diaphragm valve capsule, the bottom interior wall butt of the other end and diaphragm valve capsule.The bottom of diaphragm valve capsule and a valve body fixture 34 are fixing by axle sleeve 37, and the upper end of hollow connecting shaft 33 is provided with through hole 33a, and this through hole 33a is communicated with the internal cavities of hollow connecting shaft with the internal cavities of diaphragm valve capsule.The lower end of hollow connecting shaft is arranged with a spool 35, and spool 35 is connected with the lower end lateral wall of hollow connecting shaft by screw thread; This spool 35 matches with the valve seat 36 that is arranged on the filter core water inlet.The lower end of hollow connecting shaft 33 is passed spool 35 and is connected a signal pipe 5, and the other end of this signal pipe 5 is connected with blow-off pipe 4, thus with the blow-off pipe 4 internal cavities conducting with the differential pressure type capsule so that when carrying out backwash operation transmission of pressure.One end of blow-off pipe 4 stretches into filter core and is connected with signal pipe, and the other end reaches the outside of main body 1, and this end that stretches out main body 1 outside is provided with a blowoff valve 41, with in the blow-off pipe with sewage draining exit 43 conductings or close; This end that blow-off pipe stretches into filter core is provided with a plurality of mudholes 42.
Referring to Fig. 2, diaphragm valve capsule 31 comprises the sidepiece 31b that makes by hard material such as metal top 31a, by elastomeric material such as rubber, the bottom 31c that is made by hard material, its sidepiece is provided with a plurality of compressible folds, the diaphragm valve capsule is when the 31a pressurized of its top, top 31a moves down, drive sidepiece 31b to lower compression, cavity volume is dwindled, and after external force is removed, because the effect of spring 32 screen resiliences, top 31a moves up, drives sidepiece 31b and stretches upwards, and cavity volume returns back to original size.In the contraction and stretching process of diaphragm valve capsule, the hollow connecting shaft that is connected with diaphragm valve capsule top inner wall is mobile under the drive at top, is with simultaneously movable valve plug to move up and down, and spool is separated or closure with valve seat.The through hole that the upper end of hollow connecting shaft arranges makes hollow connecting shaft be communicated with the diaphragm valve capsule.Being connected a signal pipe between hollow connecting shaft and the blow-off pipe, the diaphragm valve capsule is communicated with blow-off pipe, just can reach pressure balance between the two, is to make the poor condition of having created of diaphragm valve capsule external and internal pressure.
The water filtering device of present embodiment can be realized three large functions: water filtration function, automatic back-flushing function and dirt eliminating function.The water filtering device of present embodiment unites two into one dirt eliminating function and automatic back-flushing function, and emphasis has been strengthened the self-cleaning function of filter core, by utilizing the differential pressure type diaphragm valve, filter element cleaning and blowdown are organically combined, thereby the water filtering device that makes present embodiment has possessed the function of automatic backwash, and the specific works process is as follows:
1, filtering function:
Referring to Fig. 1, current trend when present embodiment water filtering device realization water filtration function is shown, the water filtration function mainly realizes by filter core, detailed process is as follows: when automatic blowdown valve cuts out, water filtering device carries out water filtration work, at this moment, diaphragm valve capsule external and internal pressure is identical, the diaphragm valve capsule is in open configuration under the tension force effect of return spring, hollow connecting shaft also moves upward along with opening of diaphragm valve capsule drives filter core water inlet spool, make the filter core water inlet in open mode, sewage flows into for total mouthful 11 in the present embodiment water filtering device main body by water inlet, then branches to each filter element, obtain clean water through after the filtration of filter element, clean water flows out for total mouthful 12 from water outlet, for system, has so just realized the water filtration function.
2, automatic backwash and dirt eliminating function:
Referring to Fig. 3, Fig. 4, Fig. 5, the state of the water filtering device when one of them filter element of water filtering device that present embodiment is shown carries out automatic backwash; The water filtering device of present embodiment is through after the use of certain hour, has the tamper such as mud and is deposited in the filter core, needs clean filter core.Present embodiment utilizes filter pressure differential everywhere dexterously; need not that the external world provides water purification and the situation that need not to shut down under just can realize the automatic backwash of filter; detailed process is as follows: during cleaning; only need open separately the automatic blowdown valve of the filter element that needs cleaning; just broken original hydraulic balance this moment; produced pressure differential: referring to Fig. 3; the pressure of sewage draining exit is the I level; the blow-off pipe internal pressure is the II level; the internal pressure of filter element to be cleaned is the III level; the filter element external pressure is the IV level, and sewage pressure is the V level.Inevitably, water liquid flows to inferior grade pressure place from high level of pressure.After automatic blowdown valve is opened, because signal pipe links to each other with blow-off pipe, the signal pipe internal pressure is the II level just, the II stage pressure passes to the diaphragm valve capsule by signal pipe through hollow connecting shaft, like this, diaphragm valve capsule pressure is the II level, and diaphragm valve capsule outside is sewage, therefore, the pressure of diaphragm valve capsule outside is the V level, so just inside and outside the diaphragm valve capsule, produced pressure reduction, external high pressure can flatten the diaphragm valve capsule, and diaphragm valve capsule its top in the process that is crushed can drive hollow connecting shaft and move downward, and also can be with movable valve plug to move downward simultaneously, so that spool contacts with valve seat and fits and the filter element water inlet is closed, sewage just can't enter this filter element.Simultaneously, because the automatic blowdown valve of other filter elements still is in closed condition, therefore the filter core of other filter elements can normally carry out filtration work, sewage can enter other filter element inside and filter, the clean water that obtains then flows out from filter element, the clean water pressure rating that flows out is IV, the pressure rating III that is higher than filter element to be cleaned inside, clean water fails to be convened for lack of a quorum, and to flow to filter element to be cleaned inner for automatic reverse, so just utilize clean water that water filtering device self produces that the filter core of filter element is carried out backwash, the sewage that backwash produces is discharged through blow-off pipe from filter core inside.Automatic backwash and blowdown two large functions have so just intactly been realized.
Among the above embodiment, spring is set as elastic reset spare, in other embodiments, also can adopts elastic cover that elastomeric material makes as elastic reset spare, can both play same effect.Among the above embodiment, elastic reset spare is arranged in the diaphragm valve capsule, this is a preferred embodiment, in other embodiments, it is outside also elastic reset spare can be arranged on the diaphragm valve capsule, the mode as can being arranged to: elastic reset spare one end is connected with the top outer of diaphragm valve capsule, the other end is connected with the inwall of main body, after pressure balance, the diaphragm valve capsule that elastic reset spare can drive after the compression equally resets, and realizes same purpose like this.
Among the above embodiment, one hollow connecting shaft is set dexterously, when being resetted by force compresses or resilience, the diaphragm valve capsule can drive valve core movement, can make again the internal cavities of diaphragm valve capsule and signal pipe and the conducting of blow-off pipe inner chamber to realize the pressure transmission, this is a kind of preferred embodiment of the present utility model, in actual implementation process, also can adopt such replacement scheme: replace hollow connecting shaft to be connected with spool with common solid connector, establish again simultaneously a special conduction element, with diaphragm valve capsule cavity and signal pipe and blow-off pipe conducting, such replacement scheme also can realize same purpose.
More than the utility model is described in detail, use specific case in the literary composition principle of the present utility model and embodiment set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. the differential pressure type water filtering device that can realize automatic backwash comprises main body, is provided with two groups of above filter elements in the main body, it is characterized in that, by utilizing the pressure differential of body interior, realizes the automatic switchover of sewage water filtration pattern and filter-core back-flushing mold cleaning formula; Described filter element comprises filter core, be arranged on the filter core water inlet on filter core top, be arranged on the filter core water inlet the differential pressure type diaphragm valve, be arranged on the blow-off pipe of filter core lower end, one end of described blow-off pipe stretches into the filter core lower end, the other end extend out to outside the main body, an end that stretches into filter core is provided with mudhole, extend out to the outer end of main body and is provided with blowoff valve; Described differential pressure type diaphragm valve is provided with elastic parts, when the inner chamber compression of described elastic parts, described differential pressure type diaphragm valve with the filter core water inlet close, when the inner chamber of described elastic parts resets, described differential pressure type diaphragm valve is opened the filter core water inlet, the inner chamber conducting of the inner chamber of described blow-off pipe and described elastic parts.
2. the differential pressure type water filtering device of realizing automatic backwash according to claim 1 is characterized in that, utilizes compression that differential pressure in the main body realizes the elastic parts inner chamber and resets.
3. the differential pressure type water filtering device of realizing automatic backwash according to claim 1 is characterized in that, described differential pressure type diaphragm valve also comprises valve body fixture, spool, the valve seat that cooperates with spool, and described elastic parts is arranged on the valve body fixture; Described elastic parts comprises diaphragm valve capsule and elastic reset spare, and described diaphragm valve capsule lower end and valve body fixture are fixed, and described elastic reset spare is used for making the diaphragm valve capsule after the compression to reset; Be provided with a connection piece in the described diaphragm valve capsule, described connector one end is connected with the inside of diaphragm valve capsule, the other end is connected with spool, when the inner chamber compression of diaphragm valve capsule, connector band movable valve plug and valve seat are closed and the filter core water inlet is sealed, when the inner chamber of diaphragm valve capsule resetted, connector band movable valve plug separated with valve seat and the filter core water inlet is opened.
4. the differential pressure type water filtering device of realizing automatic backwash according to claim 3, it is characterized in that, described connector is provided with the cavity that connects two ends, described connector is provided with a through hole that its cavity is communicated with diaphragm valve capsule cavity, described valve core housing is located at the bottom of connector and fixing with it, and the lower end of described connector is connected by the end that a signal pipe and blow-off pipe stretch into filter core.
5. according to claim 3 or the 4 described differential pressure type water filtering devices of realizing automatic backwash, it is characterized in that, described elastic reset spare be arranged in the inner chamber of diaphragm valve capsule and two ends respectively with upper end and the lower end butt of diaphragm valve capsule inner chamber; Perhaps, described elastic reset spare is connected between main body top and the diaphragm valve capsule top.
6. the differential pressure type water filtering device of realizing automatic backwash according to claim 1 is characterized in that, the end that described blow-off pipe stretches into filter core is provided with a plurality of mudholes.
7. the differential pressure type water filtering device of realizing automatic backwash according to claim 3 is characterized in that, described elastic reset spare is spring.
8. the differential pressure type water filtering device of realizing automatic backwash according to claim 3 is characterized in that the gusset of described diaphragm valve capsule is provided with a plurality of retractable foldings.
9. the differential pressure type water filtering device of realizing automatic backwash according to claim 3, it is characterized in that, described diaphragm valve capsule comprises the bottom that sidewall that top that hard material is made and elastomeric material are made and hard material are made, and the bottom is provided with the through hole that passes for connector.
10. the differential pressure type water filtering device of realizing automatic backwash according to claim 4 is characterized in that described through hole is arranged on the top of connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407699 CN202751866U (en) | 2012-08-16 | 2012-08-16 | Differential pressure type water filter capable of achieving automatic back flushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220407699 CN202751866U (en) | 2012-08-16 | 2012-08-16 | Differential pressure type water filter capable of achieving automatic back flushing |
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| Publication Number | Publication Date |
|---|---|
| CN202751866U true CN202751866U (en) | 2013-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220407699 Expired - Fee Related CN202751866U (en) | 2012-08-16 | 2012-08-16 | Differential pressure type water filter capable of achieving automatic back flushing |
Country Status (1)
| Country | Link |
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| CN (1) | CN202751866U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814070A (en) * | 2012-08-16 | 2012-12-12 | 广州同方瑞风空调有限公司 | Differential pressure type water filtering device capable of realizing automatic backwash |
| CN110963561A (en) * | 2019-11-16 | 2020-04-07 | 杭州未来已来科技有限公司 | Multilayer fiber bundle biomembrane purifier |
-
2012
- 2012-08-16 CN CN 201220407699 patent/CN202751866U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102814070A (en) * | 2012-08-16 | 2012-12-12 | 广州同方瑞风空调有限公司 | Differential pressure type water filtering device capable of realizing automatic backwash |
| CN102814070B (en) * | 2012-08-16 | 2014-12-24 | 广州同方瑞风空调有限公司 | Differential pressure type water filtering device capable of realizing automatic backwash |
| CN110963561A (en) * | 2019-11-16 | 2020-04-07 | 杭州未来已来科技有限公司 | Multilayer fiber bundle biomembrane purifier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20150816 |
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| EXPY | Termination of patent right or utility model |